Currently I am trying to produce a motherboard / circuit style cover, however I tried using the overlay on the circuit pattern for it to come through the gradient shape. Usually overlay transparency would work however I am perplexed to why it isn't now? I could change the opacity but the colour wouldn't be the same.
Thank you very much for your answer. Turns out it was the stacking order! All I had to do was to bring the pattern to front and there it is. Thank you, without your question I wouldn't have solved the problem!